Cloud-Based Multicasting with Feedback in Mobile Social Networks
IEEE Transactions on Wireless Communications
With the rapid growth of smartphone usage, mobile social networks (MSNs) are becoming increasingly popular. MSN can be considered as a type of delay tolerant network (DTN) which lacks continuous end-to-end connections between nodes, due to the node mobility and limited transmission range. Inspired by the homophily of social networks that friends are usually similar in characteristics, we present a novel concept - cloud, where the nodes in frequent contact with the destinations will form destination clouds. Neighbors in the destination cloud have a special status that can forward the message to the destination directly. We propose a cloud-based multicast scheme with feedback in MSNs with two phases: pre-cloud and inside-cloud. In the pre-cloud process, the message holder will forward the copy of the multicast message to the encountered node, based on a given forwarding metric. The forwarding metric can be iteratively refined from a feedback control mechanism. In the inside-cloud process, the message holder will wait until it meets with the destinations. We analytically formulate the multicast problem into a continuous Markov chain problem, and formally analyze the latency in this model. Extensive trace-driven simulations show that our scheme significantly improves the performance compared to existing schemes.
1536-1276, ESSN: 1558-2248
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© Copyright 2013 IEEE
Wang, Yunsheng; Wu, Jie; and Yang, Wei-Shih, "Cloud-Based Multicasting with Feedback in Mobile Social Networks" (2013). Computer Science Publications. 17.